Pneumatic tire.



Patented Devn 3, 1912.

M. A. DEES.

PNEUMATIG TIRE.

y APPLIUATION FILED uns. 1911. '1 ,045,955.

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l Specialistica et Letters lPatent` Patented Dec. 3, 1912.

Application led #sanary 8, 1911. Serial No. 800,449.

Toallwhnmitfrwyconcem:

Be itknown.' that yI', Manic.' A.' Dass', a citizen-ofthe United Statesof America, -residing atPascagoulmin the county of Jackaon and'State ofMississip i, hm'e invented certain new'and useful mprovements inPneumatic lTires, of which the following is x a full,.clcar, and exactdescription, reference being had to the accompanying lfonnmg part ofthis specification.

My invention relates` to pneumatic tires drawings,

and itpertains. articular-ly to a shield for the inner tubeo a pneumatictire by virtue offwhich said-inner tube may be he d away from afractured or weakened portion of the outer casin of the tire, therebypreventing. what is commonly known as a blowfoutfof the. inner'tuhe.

FigureI is a longitudinal section through afra ent of a pneumatic tirewith one of my's ieldstherein located at a breach in the'outercasin `ofthe tire. Fig. II is a face view of t e shield shown m` Fig. I showinthe means by which the edges of the shie d areheld from separation andthe flap by which the inner tube is protected from the fastening meansof the shield. Fig. III is an enlarged cross section through the tireshown in Fig. I. l

In the'accompanying drawings A designates the outer'casing of apneumatic tire in which is shown at a a breach or fracture through whichthe inner tube within the outer casing might become exposed` with theresult of a blow out in the absence of any means to prevent suchexposure.

B is the inner tube in the outer casing.

1 designates my shield within which the inner tube B is adapted to bepartially incased at the location of a breach in the outer casing, suchas that at a, this shield being preferably composed of s plurality oflayers of fabric, although it may be of a single la er of fabric, or bemade of any other suita le material. This shield is inl tended to beplaced within the pneumatic tire'so that its separated edges are locatedat the inner circle of the tire andthe shield has attached 'to it atits'separated edges sets of loops 27'and iithe loops 2 being attachedand the loops 8 being attached tothe shield scent toj'one fof itsedges."

adjacent its other edge. The loo s may he made of any suitable-materialan arc preferably attached to the shield by rivcts 4.

5 is a key extending longitudinally of thc shield through the loops 2and 3 and by which the shield is held in a contracted coudition when inservice. The key is preferably -a strip of metal, the ends of which maybe bent over to lie against the endless connecting loops, as seen inFigs.- I and Il, after the key'has been threaded through the severalloops of the shield. The key 5 may be either fiat, as shown, or round;but it is preferably made fiat, and there is prefer` ably furnished witheach shield a plurality of keys of different widths so that a more orless contraction of the shield may be produced accordin to the width ofthe key that ismade use o Fo instance, if it is desired. to use theshield within a tire casing of smaller diameter than another tirecasing, a'wide key would be utilized and a narrower key would beemployed for a casing of greater diameter.

The furnishin of ke s of different widths is also importan for t ereason that a tire casin that may be of one diameter when new comesstretched to another diameter after it has been in service for sometime, and a key would be serviceable for use with the shield when thecasing is new that would not be suitable when the casing has becomestretched and greater diameter of the shield to suit the greaterdiameter ofthe casing would be provided for. The loop connecting key isa rigid member and therefore mav be readily threaded through the severalloops 2 and 8 of the shield to hold the edges of the shield fromspreading apart while the shield is in service and being a ri gid memberserves in connection with the loops as a most eicient means formaintaining thc shield in its proper shape.

An important feature in my `shield is that of its being so ori 'nallymade that when the edges of the shie d are connected, the shield is ofless diameter at its central port-ion than at its ends. VThe object inso making the shield is to provide for the end portions of the shieldfitting snugly against the outer casing of aztire when initial inflationot the inner tube of the tire B takes place, thereby is forced outwardlyby reason of the greater pressure thcreagainst.

'lo provide against injuryy of the inner tube of the tire bythe-fastening devices employed to connect the edges of my shield, 1incorporate. in the shield a guard fiap 6 that is secured to the shieldadjacent. one of its edges, )referably by rivets 7. This gnulrd llap islocated interiorly of the shield when it. 1s in service. and spans thegap between the `connectededges of the shield at-wliich the fasteningdevices are located. The Hap is ofv greater length than the-shield'landbyV reasonl of thisgre'ater length it has extensions that. protrudebeyond the fastening de` vices and actto prevent'an `contactbetween theinner tube and the slneld'fastenin4 devices, thereby obviating anyopportuni y of the inner tube suffering injury at the ends of theshield.

' I vclaim 1. A shield of the character described having se )arableedges and means for holding the e ges in contracted positions, and aguard tlap spanning the means for connectlngthe e( es, the ends of thetlap protrud ing beyont the ends of the shield.

2. The combination with the inner air tube of a pneumatic tire., of arepair patch therefor comprising a i'lexible strap encircling said airtube; means engaging the. adjacent extremities of said strap foradjusting the latter about .said tube; and a member within said strapund spanning; the gap between the adjacent. ends thereof. therespective. extremities of said member being extended beyond thecorrespomling,r extremities of said strap` substantially as described.

3. A shield of the character described having means for holding it in ncontracted condition7 the shield being of smaller diameter at itscent-ral portion than at its ends.

MARK A. DICES.

In the presence of- A. J. MCCAULsr, E. B. LINN.

Copiez e! this patent may.bo obtained for nvo oenta caoh, by addressingthe "Commissioner of Patents. Washington, D. 0.

